package org.example;

import org.apache.commons.codec.digest.DigestUtils;

import java.io.File;

/**
 * Hello world!
 */
public class App3 {
    public static void main(String[] args) {

        String cropId="ding809f88117240857c";
        String dingUserId="031736044133569923";
        String code="7F666S81KZ1BBRHZEA54S74EQDYP2VE5N88ILO6";
        String s = DigestUtils.md5Hex(cropId + dingUserId + code);
        System.out.println("s.toUpperCase() = " + s.toUpperCase());
    }
}
